Advice - Selling prints of Commissioned pieces

[quescostumes.livejournal.com]

I've recently heard of an artist who is selling prints that contains other people's characters. The art and style is her own, and the art with characters are either gifts or commissions. The prints for sale include the original piece uploaded to art sites, without any recoloring or hiding others' characters. Should people buy these prints, it's basically making money off of others' designs, right?

It's not okay, right? Is it legal? Rude? Or just frowned upon?

How should someone handle this kind of situation if the artist in question is a friend?

Any advice, A_B?

Edit: Thanks everyone for your very useful replies! :)

Comments

[kayla-la.livejournal.com]

As others have said, you are well within your rights to sell prints of your work. I feel like this is a tradeoff for the extremely low prices most of us charge within this fandom. You get too may people who want to pay you 15 dollars for a fully coloured picture and also expect full rights (and sometimes even credit!). It's just not realistic.

But definitely a good idea to put it in your TOS and occasionally remind people.